Questions tagged [ip-forwarding]
The ip-forwarding tag has no usage guidance.
145
questions
0
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811
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How to access the floating ip in browser rather than a localhost?
I have an instances that was made in OpenStack which have a floating IP for its instance, the IP for this machine is 10.1.1.164. I tried to forward this instances so it will accessible in my firefox ...
-1
votes
1
answer
36
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How to forward public_IP/dashboard of an HTTP server to private_IP/dashboard?
I have a website which is accessible internally via http://private_IP/dashboard.
The public IP forwards all traffic to the private IP.
http://public_IP -> http://private_IP. This works.
However, ...
1
vote
1
answer
1k
views
Ping public ipv6 dns from docker container
The docker container is running on a VPS (ubuntu 18.10).
What I am able to do:
ping -6 2001:4860:4860::8888 from host machine
ping -6 <docker container ipv6 address from host machine
ping -6 &...
1
vote
1
answer
412
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route traffic from VPN server LAN (cloud) peer to VPN client
I have set up a Google Cloud deployment roughly configured as such:
node B, which is at address 10.0.0.6 and default route is through 10.0.0.1
node V, which is a VPN server, on same subnet at 10.0.1....
0
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1
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84
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IP/Packets Forwarding [closed]
I have searched a lot about IP + Packets forwarding but there was not enough information to find.
Is forwarding only used in case of Virtual Private Networking or it has also other uses? if yes, when ...
1
vote
1
answer
737
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Routing from LAN into OpenVPN
I need to set up a route from our local network into our VPN.
That is, anybody from inside the LAN should be able to communicate with machines in the VPN, without being a VPN client itself. Problem is,...
1
vote
1
answer
5k
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Squid 4.2 - Different outbound IP for each client/user
I have been playing with a few different pieces of forward proxy software, primarily CCProxy and Squid Proxy/Cache. What I have is a dedicated server with a single NIC with multiple IPs assigned to it....
0
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0
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1k
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forward all traffic between two ports without iptables
I have read this:
Port forwarding on Linux without iptables?
I have a vps and I have ran lxc containers on it. I want to redirect all incoming traffic from one outside port to one port of a container ...
0
votes
0
answers
42
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Selectively setting default gateway for traffic forwarded by IP tables
I'm attempting to forward traffic from a publicly available host to a private host located on a VPN. The TCP packets need to retain the original source IP address.
I've set IP address forwarding:
...
0
votes
1
answer
650
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Ip forwarding - multiple subnets, multiple Ethernet ports
There are plenty of examples on here of how to forward ip traffic on a linux machine, and a few examples of how to forward traffic from one interface to another. However, most of the latter examples ...
1
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1
answer
460
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Attach multiple static IP to windows server instance on Google Cloud
My aim is this
Host multiple websites/apps on IIS that is configured on my windows server instance on Google cloud e.g example.com (to host the website), api.example.com (to host api endpoints), app....
6
votes
1
answer
4k
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Docker bridge and nginx allowed ip
We have a docker bridge containing several docker containers. The main docker is an nginx server which acts as web host and forwards all data to the other containers.
Now a requirement is that the ...
1
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0
answers
787
views
(Mac OS PF) Redirect outgoing UDP traffice to specific ip:port
I'm having some trouble getting my head around how PF works in Mac OS. I have been doing a lot of research on the topic but just cannot find the solution (although I can find many other very similar ...
-1
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1
answer
797
views
Forwarding all traffic to proxy server
I am trying to build a proxy server that will receive all client packets and forward to the content server. As I read the proxy type is "forward proxy". While doing the system architecture I couldn't ...
3
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3
answers
12k
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How to Turn on IP Forwarding for Interface If Forwarding Rule Was Already Created
I am trying to turn on IP Forwarding for an interface of an instance hosted in Google Cloud.
I have a f1 micro VM instance on Google Compute Engine.
I've created an IP forwarding rule with gcloud ...
2
votes
1
answer
1k
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Sharing CheckPoint VPN connection
Sorry for my english.
I have 2 VirtualBox VM. One with Debian 8 and the other with Ubuntu Server 14.04 LTS. Both configured with a bridged network adapter. Both machines have the same MAC an IP ...
0
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1
answer
807
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NAT public IP to local IP | IPv6
I'm trying to create a small gateway for a home project. I have a NODE, GATEWAY and EXTERNAL machine, running on a public IPv6 network. Though the NODE is not connected via ethernet, but my goal is to ...
0
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1
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1k
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Ip forwarding very slow in google cloud
I have set up GCE-instances (google cloud) and EC2-instances (aws), and I want to set up routing like this:
AWS-DUB <-A-> GCE-LON <-B-> GCE-TOK <-C-> AWS-TOK
Connection A is ...
2
votes
2
answers
2k
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How to forbid forwarding packets to private network addresses via interface
On my server, I have a default route to interface eth0. It has public internet address and faces ISP network. I have packet forwarding enabled, and few local interfaces/bridges with private 10.x.x.x ...
0
votes
1
answer
919
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Host and VM share same IP frustrating intent to forward all incoming traffic to UTM on VM, what to do?
I a new to virtual networking and have been at it about 2 months.
I have a physical machine (PM) with physical ports eth0 and eth1. Eth1 is not being used. Rather, eth0 is attached to both the WAN on ...
0
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0
answers
201
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How to test route lookup performance?
I need to test (IPv6) route lookup performance in the Linux kernel. I want to know how much time it takes to find a match if there are 100 routes, or 1000, or 10000 and so on. I'm using containers, so ...
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2
answers
8k
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How to Access a host behind a server over VPN (IP Forwarding)
I have a Ubuntu server (172.10.200.11) and many remote terminal units with simcards and each individual simcard operator using different IP pool such as 10.57.0.0/16 for OP-A, 10.112.0.0/16 for OP-B, ...
1
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1
answer
3k
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Layer 3 IP Forwarding/NAT between two interfaces
I have a strange configuration, let's see if you can give me some advice :)
I have two networks (10.X/24 and 20.X/24) conected by a linux machine between them.
This linux have two interfaces, each ...
0
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1
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95
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Connect clients of different networks that I CANT change its netconfig
I have two clients
Android phone doing hotspot (192.168.43.1/24)
Another device with static ip (192.168.1.10/24)
I CAN'T change the network config of anyone, first because android hotspot is ...
0
votes
2
answers
6k
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routing setup on centos7
I'm new in routing but need to accomplish the following routing task
I have 3 machines Machine A, B, C,
CentOS7 on each of them, selinux disabled, firewall not installed
Machine A has 3 nics,
...
0
votes
2
answers
601
views
Port forwarding while retaining the source IP?
I have a dedicated server, which I have everything running off, however the dedi lacks DDoS protection, so I have purchased a VPS that comes with it, so I can effectively use it as a proxy.
I have ...
1
vote
0
answers
98
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2 Node Linux Cluster - Architecture Validation
so I have a 2 node galera cluster on single 192.168.10.0/24 IP subnet as on this layout:
My problem is not about Galera but connectivity. Node1 is unable to reach Node2 via ICMP hence my Galera ...
0
votes
1
answer
54
views
How to create a private network with same production ip address? And How to make communication between using linux machine as router?
I have production network in some IP series say 192.168.X.X in Vmware. In this i have some machine. I need to create a test setup. I have created a separate VLAN. Those VLAN were not connected to any ...
2
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2
answers
49
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What prevents an ip_forwarded-enabled server to be used by an attacker as a router
Setup / Question
Given a server on the public internet with the IP 185.48.117.176 with /proc/sys/net/ipv4/ip_forward=1 and no iptable-rules.
What prevents an attacker that is
directly or
indirectly ...
1
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1
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1k
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IPv6 forwarding seems to only work in one direction
I now know the answer: I did a bad mistake and did not even tell you. There was also a running radvd for router advertisment and instead of RA'ing a 64-net I was RA'ing a 56-net. So the router and/or ...
0
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0
answers
94
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smtp-request behind iptables-router not working
I set up a router with ip-forwarding on Ubuntu 16.04 Server edition.
I enabled ip-forwarding in /etc/sysctl.conf .
I have set
net.ipv4.ip_forward=1
and executed
sysctl -p /etc/sysctl.conf
I used ...
1
vote
1
answer
477
views
UFW 0.35 - Redirect incoming port 2121 to port 21 on VM (other interface)
I'm posting here because I've got a server, and I want to redirect the port 2121 of my main interface (eth0) to the port 21 of my secondary interface (virbr0).
This is my configuration :
Physical ...
1
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1
answer
48
views
HTTPS between two port forwarded domains in Azure, problematic?
I'm not too comfortable with these things, but quite possibly what I'm asking is trivial.
I have a site hosted at foo.azurewebsites.net
And also an API at bar.azurewebsites.net (WEB API as an API ...
2
votes
0
answers
896
views
How to redirect a URL from hostapd without internet access?
I have configured my server with iptables rules in order to forward all traffic to a specific domain. Those are NAT rules and the redirection works fine as long as I have internet access. But when ...
0
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1
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41
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Send local traffic from host A:3306 to host B:3306
I'm having trouble making sense of all the iptable examples out there.
I simple want all requests from my machine to host A on port 3306 to actually go to host B on port 3306. How can I do this?
0
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0
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235
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Naked Domain Forwarding Broken on Godaddy with Period Slash
Is Godaddy naked domain forwarding broken when you have a ./ in the URL?
I use GoDaddy for DNS and have naked domain forwarding setup. I have my A record @ set to GoDaddy servers, and use their ...
0
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3
answers
3k
views
Forward packet to another host in the same network
I have 3 hosts in the same subnet, each host has one network interface:
A: 192.168.0.1/24
B: 192.168.0.2/24
C: 192.168.0.3/24
On host A, I just ping host B once. This should generate a packet (A->B) ...
3
votes
9
answers
15k
views
IP forwarding on Linux - anything important to make sure to do or know?
In moving a website with a dedicated IP from one server to another, to minimize downtime due to DNS propagation delays, there's the approach of using IP forwarding so that all traffic to the original ...
1
vote
1
answer
2k
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How to prevent linux from dropping incoming packets that have a wrong mac address (promiscuous doesn't work)
I configured three machines in a static proxy_arp like manner:
----------------------+ +-----------------------------------------------+ +----------------------
Machine A | | ...
2
votes
1
answer
426
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how to configuring secondary IP subnet that is directly routed to WMware ESXI main IP
I have a ESXI 5.1 which comes with a /29 Block IP (EX. 70.60.50.0/29) and the ESXi management address is frist usable addres 70.60.50.2, also i have a secondary /27 IP block (10.20.30.0/27) which is ...
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1
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973
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How can I add a static route via a remote server?
I have a remote (i.e., 3 hops away) hosted Linux VM, with some LXCs.
Those LXCs have internal IPs 10.0.3.*
The VM has IP forwarding enabled.
From my Windows machine, I would like to ping the inner ...
0
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1
answer
1k
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redirect IP on osx
On my Mac OS X (10.6.8) I'd like to make all requests for 111.111.111.111 go to 222.222.222.222 for all ports. To test this, I have a webserver at 222.222.222.222:80 which will respond with a page for ...
11
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2
answers
17k
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Map IP to another IP
Assume the following scenario, if I have a local machine (A) the requests another machine (B) using B's internal IP without regard the ports. But A and B are not on the same network, however, B has a ...
0
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1
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188
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route output traffic from specific NAT'ed VM via ip alias
In a dedicated server with several containers behind NAT, I'm trying to route the output / outbound traffic from one of the containers through a specific virtual interface attached to the main ...
0
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1
answer
213
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IP Forwarding Issue
This is my first post, so thanks in advance for y'all's help. I'll try to keep the background succinct and relevant.
I am running a server on centOS 4.6 for network client testing. I have the local ...
0
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1
answer
318
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Master and slave devices talking to each other through another device with two interfaces. All in the same network
I have three devices, one is a master which will talk with the slave and Device3 but it is only physically connected to the Device3. The slave will speak only with the master(also through the Device3)....
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1
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3k
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iptables forward ip to another ip
I've configured multiple IP Addresses on my Ubuntu ssh server. Now the server can be accessed by using any IP Address, from 192.168.0.51 to 192.168.0.99.
Depending on which IP Address someone uses to ...
1
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1
answer
2k
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forwarding packet from one interface to another interface
I have an embeded system with 2 interfaces e0 and m0, whose ips are 10.0.0.20 and 192.168.0.20, respectively.
Incoming packets into e0 have an ip of 10.0.0.10 and should be forwarded to m0 interface ...
0
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1
answer
630
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Enable IP forwarding inside an OpenVZ container but disable it on host
Is it possible to enable IP forwarding inside an OpenVZ container but keep it disabled in host system?
I understand that OpenVZ containers and host share kernels, but I can use sysctl to set ...
0
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1
answer
564
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Redirect traffic through a computer to another connected to the same switch
I am trying to setup a single sender, single bottleneck and single receiver network.
Network Image
The router in the image is a computer that has ip_forwarding enabled.
PC1 has the default gateway ...